/*
 * Copyright (c) 2015 Raytheon BBN Technologies Corp
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.poi.xdgf.util;

import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.util.HashMap;
import java.util.Map;

import org.apache.poi.POIXMLException;
import org.apache.xmlbeans.XmlObject;


public class ObjectFactory<T, X extends XmlObject> {
	
	Map<String, Constructor<? extends T>> _types = new HashMap<>();
	
	public void put(String typeName, Class<? extends T> cls, Class<?>... varargs) throws NoSuchMethodException, SecurityException {		
		_types.put(typeName, cls.getDeclaredConstructor(varargs));
	}
	
	public T load(String name, Object... varargs) {
		Constructor<? extends T> constructor = _types.get(name);
		if (constructor == null) {
			
			@SuppressWarnings("unchecked")
			X xmlObject = (X) varargs[0];
			
			String typeName = xmlObject.schemaType().getName().getLocalPart();
			throw new POIXMLException("Invalid '" + typeName + "' name '" + name + "'");
		}
		
		try {
			return constructor.newInstance(varargs);
		} catch (InvocationTargetException e) {
			throw new POIXMLException(e.getCause());
		} catch (Exception e) {
			throw new POIXMLException(e);
		}
	}
	
}
